CN105610757A - Communication method and communication apparatus for wireless local area network, site and access point - Google Patents
Communication method and communication apparatus for wireless local area network, site and access point Download PDFInfo
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- CN105610757A CN105610757A CN201510974775.3A CN201510974775A CN105610757A CN 105610757 A CN105610757 A CN 105610757A CN 201510974775 A CN201510974775 A CN 201510974775A CN 105610757 A CN105610757 A CN 105610757A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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Abstract
The invention provides a communication method and a communication apparatus for a wireless local area network, a site and an access point. The communication method for the wireless local area network comprises the steps of: generating a message frame, wherein the message frame comprises a first identification bit and a second identification bit, the first identification bit is used for indicating whether cached uplink data exists on the site, and the second identification bit is used for indicating whether the site supports an uplink orthogonal frequency division multiple access mechanism; and sending the message frame to the access point. According to the technical scheme of the invention, the UL (UpLink) OFDMA (Orthogonal Frequency Division Multiple Access) mechanism can be guaranteed to be applied, so that utilization efficiency of a frequency spectrum is improved, and throughput of a system is indirectly improved.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of communication party of WLANThe communicator of method, a kind of WLAN, a kind of website and a kind of access point.
Background technology
In May, 2013,802.11 have set up the HEW of seminar of Wi-Fi technology of future generation(HighefficiencyWLAN, efficient WLAN), i.e. 802.11ax, main researchPoint is the handling capacity that improves existing Wi-Fi technology, the effective utilization ratio that improves frequency spectrum, raising userExperience and service quality Q oE (QualityofExperience), and realize than existing Wi-FiTechnology adapts to the more communication environment of crypto set.
In existing Wi-Fi standard, up for multiple STA (Station, website) buffer memoryData, in the process that each STA and AP (AccessPoint, access point) communicate, are countingIn frame head according to frame or ACK (Acknowledge confirms) frame, identify it and have the upper line number of buffer memoryAccording to, AP obtains the upstream data of multiple STA, such mode by the mode of poll STAInefficiency. Therefore,, in the formulation process of standard, will adopt OFDMA (OrthogonalFrequencyDivisionMultipleAccess, OFDM) technology makes multi-user simultaneouslySet up communication, i.e. ULOFDMA (uplink orthogonal frequency division with AP (AccessPoint, access point)Multiple access) mechanism, make multiple STA can send the upstream data of its buffer memory simultaneously, improve frequentlyThe utilization ratio of spectrum, but concrete operating process does not but define.
Therefore, how can the flow process when adopting ULOFDMA mechanism carry out reasonable definition, withGuarantee that ULOFDMA mechanism can be applied, the utilization ratio that improves frequency spectrum becomes urgently to be resolved hurrilyTechnical problem.
Summary of the invention
The present invention based on above-mentioned technical problem one of at least, has proposed a kind of new WLAN justCommunication plan, can guarantee that ULOFDMA mechanism is applied, thereby improve the profit of frequency spectrumBy efficiency, indirectly improve the handling capacity of system.
In view of this, according to a first aspect of the invention, a kind of communication party of WLAN has been proposedMethod, comprising: generating messages frame, and described message frame comprises the first flag and the second flag, described inWhether the first flag is used to indicate website the upstream data of buffer memory, and described the second flag is used in reference toShow whether described website supports uplink orthogonal frequency division multiple access mechanism (being ULOFDMA); To accessPoint sends described message frame.
In this technical scheme, the message that website comprises the first flag and the second flag by generationFrame, and whether the first flag instruction website has the upstream data of buffer memory, the second flag instruction websiteWhether support uplink orthogonal frequency division multiple access mechanism, make access point at the message frame that receives website transmissionTime, the information that can report according to website is determined the ability information of website, and then can have at website slowThe upstream data of depositing, and while supporting uplink orthogonal frequency division multiple access mechanism, send the communication resource to website and divideJoin message frame, to guarantee that ULOFDMA mechanism can be applied, thus the utilization that improves frequency spectrumEfficiency, has improved the handling capacity of system indirectly.
In the time that the value of the first flag is set to 1, represent that described website has the upstream data of buffer memory,Certainly when also the first flag is set to other values (such as 0), represent the upstream data of buffer memory.
In the time that the value of the second flag is set to 1, represent that described website support uplink orthogonal frequency division is manyLocation mechanism, represents described website when also the second flag is set to other values (such as 0) certainlySupport uplink orthogonal frequency division multiple access mechanism.
Wherein, uplink orthogonal frequency division multiple access mechanism refers to the letter that all websites distribute according to access pointRoad bandwidth resources can be transmitted the upstream data of institute's buffer memory in communication channel simultaneously to access point.
In technique scheme, preferably, indicate described website to have buffer memory in described the first flagUpstream data, described the second flag indicates described website to support uplink orthogonal frequency division multiple access mechanismTime, the communication means of described WLAN, also comprises:
Receive the communication resource distribution message frame that described access point sends, described communication resource distribution messageFrame comprises that described website transmits the required bandwidth resources of upstream data of described buffer memory; According to described bandwidthResource is transmitted the upstream data of described buffer memory to described access point.
Wherein, described bandwidth resources refer to that access point distributes to the letter of website transmission buffer upstream dataThe resource such as duration, transmission time started of road bandwidth, shared channel width.
In this technical scheme, indicating website when the first flag has the upstream data of buffer memory, and second marksWhile knowing position instruction website support uplink orthogonal frequency division multiple access mechanism, access point can generate the communication resource and divideJoin message frame, and then website can come according to the bandwidth resources that comprise in communication resource distribution message frameThe upstream data of transmission buffer, has guaranteed the application of ULOFDMA mechanism, has improved the profit of frequency spectrumBy efficiency, indirectly improve the handling capacity of system.
In above-mentioned arbitrary technical scheme, preferably, (be MAC at the frame head of described message frameDescribed the first flag and described the second flag are set Header).
In above-mentioned arbitrary technical scheme, preferably, described the first flag is arranged on described frame headIn Moredata subdomain in frame control domain (being FrameControl); Described the second flag is establishedPut in the Reserved subdomain in the high-throughput control domain (being HTControl) at described frame head.
Certainly, the second flag also can be arranged in other fields of mac frame head or newly-increased oneIndividual exclusive field arranges the second flag.
In above-mentioned arbitrary technical scheme, preferably, the described described message sending to described access pointFrame is following one of any: clean culture acknowledgement frame, up aggregate acknowledgement frames, clean culture uplink data frames, spySurvey claim frame, association request frame and authentication request frames.
According to a second aspect of the invention, a kind of communication means of WLAN is also proposed, bagDraw together: receipt message frame, described message frame comprises the first flag and the second flag, described the first markKnowing position instruction website has the upstream data of buffer memory, and it is up that described the second flag indicates described website to supportOFDM mechanism; Generate communication resource distribution message frame, described communication resource distribution message frameComprise that described website transmits the required bandwidth resources of upstream data of described buffer memory; Send to described websiteDescribed communication resource distribution message frame.
In this technical scheme, by there is the upstream data of buffer memory at the first flag instruction website, theWhen two flag instruction websites are supported uplink orthogonal frequency division multiple access mechanism, generate communication resource distribution messageFrame is also sent to website, makes website in the time receiving communication resource distribution message frame, can be according to logicalThe bandwidth resources that comprise in letter resource allocation message frame are carried out the upstream data of transmission buffer, have guaranteedThe application of ULOFDMA mechanism, has improved the utilization ratio of frequency spectrum, has indirectly improved gulping down of systemThe amount of telling.
Particularly, in the time that the value of the first flag is set to 1, represent that described website has the upper of buffer memoryRow data; In the time that the value of the second flag is set to 1, represent described website support uplink orthogonal frequentlyDivide multiple access mechanism.
Wherein, uplink orthogonal frequency division multiple access mechanism refers to the letter that all websites distribute according to access pointRoad bandwidth resources can be transmitted the upstream data of institute's buffer memory in communication channel simultaneously to access point.
In technique scheme, preferably, also comprise: receive described website and provide according to described bandwidthThe upstream data of source transmission.
Wherein, bandwidth resources refer to that access point distributes to the channel strip of website transmission buffer upstream dataThe resource such as duration, transmission time started of wide, shared channel width.
According to the embodiment of third aspect present invention, a kind of communication dress of WLAN is also proposedPut, comprising: generation unit, for generating messages frame, described message frame comprises the first flag andTwo flags, whether described the first flag is used to indicate website the upstream data of buffer memory, and describedTwo flags are used to indicate described website and whether support uplink orthogonal frequency division multiple access mechanism; Transmitting element,For sending described message frame to access point.
In this technical scheme, the message that website comprises the first flag and the second flag by generationFrame, and whether the first flag instruction website has the upstream data of buffer memory, the second flag instruction websiteWhether support uplink orthogonal frequency division multiple access mechanism, make access point at the message frame that receives website transmissionTime, the information that can report according to website is determined the ability information of website, and then can have at website slowThe upstream data of depositing, and while supporting uplink orthogonal frequency division multiple access mechanism, send the communication resource to website and divideJoin message frame, to guarantee that ULOFDMA mechanism can be applied, thus the utilization that improves frequency spectrumEfficiency, has improved the handling capacity of system indirectly.
In the time that the value of the first flag is set to 1, represent that described website has the upstream data of buffer memory,Certainly when also the first flag is set to other values (such as 0), represent the upstream data of buffer memory.
In the time that the value of the second flag is set to 1, represent that described website support uplink orthogonal frequency division is manyLocation mechanism, represents described website when also the second flag is set to other values (such as 0) certainlySupport uplink orthogonal frequency division multiple access mechanism.
Wherein, uplink orthogonal frequency division multiple access mechanism refers to the letter that all websites distribute according to access pointRoad bandwidth resources can be transmitted the upstream data of institute's buffer memory in communication channel simultaneously to access point.
In technique scheme, preferably, indicate described website to have buffer memory in described the first flagUpstream data, described the second flag indicates described website to support uplink orthogonal frequency division multiple access mechanismTime, the communicator of described WLAN also comprises:
Receiving element, the communication resource distribution message frame sending for receiving described access point is described logicalLetter resource allocation message frame comprises that described website transmits the required bandwidth money of upstream data of described buffer memorySource; Data transmission unit, for transmitting described buffer memory according to described bandwidth resources to described access pointUpstream data.
Wherein, bandwidth resources refer to that access point distributes to the channel strip of website transmission buffer upstream dataThe resource such as duration, transmission time started of wide, shared channel width.
In this technical scheme, indicating website when the first flag has the upstream data of buffer memory, and second marksWhile knowing position instruction website support uplink orthogonal frequency division multiple access mechanism, access point can generate the communication resource and divideJoin message frame, and then website can come according to the bandwidth resources that comprise in communication resource distribution message frameThe upstream data of transmission buffer, has guaranteed the application of ULOFDMA mechanism, has improved the profit of frequency spectrumBy efficiency, indirectly improve the handling capacity of system.
In above-mentioned arbitrary technical scheme, preferably, in the frame head of described message frame, arrange describedOne flag and described the second flag.
In above-mentioned arbitrary technical scheme, preferably, described the first flag is arranged on described frame headIn Moredata subdomain in frame control domain; The height that described the second flag is arranged on described frame head gulps downIn Reserved subdomain in the amount of telling control domain.
Certainly, the second flag also can be arranged in other fields of mac frame head or newly-increased oneIndividual exclusive field arranges the second flag.
In above-mentioned arbitrary technical scheme, preferably, the described described message sending to described access pointFrame is following one of any: clean culture acknowledgement frame, up aggregate acknowledgement frames, clean culture uplink data frames, spySurvey claim frame, association request frame and authentication request frames.
According to a forth aspect of the invention, a kind of communicator of WLAN is also proposed, bagDraw together: receiving element, for receipt message frame, described message frame comprises the first flag and the second markPosition, described the first flag instruction website has the upstream data of buffer memory, described the second flag instruction instituteState website and support uplink orthogonal frequency division multiple access mechanism; Generation unit, disappears for generating communication resource distributionBreath frame, described communication resource distribution message frame comprises that described website transmits the upstream data institute of described buffer memoryThe bandwidth resources that need; Transmitting element, for sending described communication resource distribution message to described websiteFrame.
In this technical scheme, by there is the upstream data of buffer memory at the first flag instruction website, theWhen two flag instruction websites are supported uplink orthogonal frequency division multiple access mechanism, generate communication resource distribution messageFrame is also sent to website, makes website in the time receiving communication resource distribution message frame, can be according to logicalThe bandwidth resources that comprise in letter resource allocation message frame are carried out the upstream data of transmission buffer, have guaranteedThe application of ULOFDMA mechanism, has improved the utilization ratio of frequency spectrum, has indirectly improved gulping down of systemThe amount of telling.
Particularly, in the time that the value of the first flag is set to 1, represent that described website has the upper of buffer memoryRow data; In the time that the value of the second flag is set to 1, represent described website support uplink orthogonal frequentlyDivide multiple access mechanism.
Wherein, uplink orthogonal frequency division multiple access mechanism refers to the letter that all websites distribute according to access pointRoad bandwidth resources can be transmitted the upstream data of institute's buffer memory in communication channel simultaneously to access point.
In technique scheme, preferably, described receiving element also for: receive described website rootAccording to the upstream data of described bandwidth resources transmission.
Wherein, bandwidth resources refer to that access point distributes to the channel strip of website transmission buffer upstream dataThe resource such as duration, transmission time started of wide, shared channel width.
According to a fifth aspect of the invention, also propose a kind of website, having comprised: as the above-mentioned third aspectThe communicator of the WLAN proposing.
According to a sixth aspect of the invention, also propose a kind of access point, having comprised: as above-mentioned four directionsThe communicator of the WLAN that face proposes.
By above technical scheme, can guarantee that ULOFDMA mechanism is applied, thereby improveThe utilization ratio of frequency spectrum, indirectly improved the handling capacity of system.
Brief description of the drawings
Fig. 1 shows the showing of communication means of the WLAN of first embodiment according to the inventionMeaning flow chart;
Fig. 2 shows the showing of communicator of the WLAN of first embodiment according to the inventionMeaning block diagram;
Fig. 3 shows the schematic block diagram of website according to an embodiment of the invention;
Fig. 4 shows showing according to the communication means of the WLAN of second embodiment of the present inventionMeaning flow chart;
Fig. 5 shows showing according to the communicator of the WLAN of second embodiment of the present inventionMeaning block diagram;
Fig. 6 shows the schematic block diagram of access point according to an embodiment of the invention;
Fig. 7 shows STAs showing to AP feedback clean culture ACK frame according to an embodiment of the inventionMeaning flow chart;
Fig. 8 shows STAs showing to AP feedback multicast ACK frame according to an embodiment of the inventionMeaning flow chart;
Fig. 9 shows the frame structure schematic diagram of message frame according to an embodiment of the invention;
Figure 10 shows according to the communication means of the WLAN of the 3rd embodiment of the present inventionSchematic flow diagram.
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attachedFigure and detailed description of the invention are further described in detail the present invention. It should be noted that, notIn the situation of conflict, the feature in the application's embodiment and embodiment can combine mutually.
Set forth in the following description a lot of details so that fully understand the present invention, still,The present invention can also adopt other to be different from other modes described here and implement, therefore, and the present inventionProtection domain be not subject to the restriction of following public specific embodiment.
Fig. 1 shows the showing of communication means of the WLAN of first embodiment according to the inventionMeaning flow chart.
As shown in Figure 1, the communication means of the WLAN of first embodiment according to the invention,Comprise:
Step 102, generating messages frame, described message frame comprises the first flag and the second flag,Whether described the first flag is used to indicate website the upstream data of buffer memory, and described the second flag is usedWhether support uplink orthogonal frequency division multiple access mechanism in the described website of instruction;
Step 104, sends described message frame to access point.
The executive agent of the communication means shown in Fig. 1 can be mobile phone or PDA (PersonalDigitalAssistant, palm PC) etc.
In this technical scheme, the message that website comprises the first flag and the second flag by generationFrame, and whether the first flag instruction website has the upstream data of buffer memory, the second flag instruction websiteWhether support uplink orthogonal frequency division multiple access mechanism, make access point at the message frame that receives website transmissionTime, the information that can report according to website is determined the ability information of website, and then can have at website slowThe upstream data of depositing, and while supporting uplink orthogonal frequency division multiple access mechanism, send the communication resource to website and divideJoin message frame, to guarantee that ULOFDMA mechanism can be applied, thus the utilization that improves frequency spectrumEfficiency, has improved the handling capacity of system indirectly.
In the time that the value of the first flag is set to 1, represent that described website has the upstream data of buffer memory,Certainly when also the first flag is set to other values (such as 0), represent the upstream data of buffer memory.
In the time that the value of the second flag is set to 1, represent that described website support uplink orthogonal frequency division is manyLocation mechanism, represents described website when also the second flag is set to other values (such as 0) certainlySupport uplink orthogonal frequency division multiple access mechanism.
Wherein, uplink orthogonal frequency division multiple access mechanism refers to the letter that all websites distribute according to access pointRoad bandwidth resources can be transmitted the upstream data of institute's buffer memory in communication channel simultaneously to access point.
In technique scheme, preferably, indicate described website to have buffer memory in described the first flagUpstream data, described the second flag indicates described website to support uplink orthogonal frequency division multiple access mechanismTime, the communication means of described WLAN, also comprises:
Receive the communication resource distribution message frame that described access point sends, described communication resource distribution messageFrame comprises that described website transmits the required bandwidth resources of upstream data of described buffer memory; According to described bandwidthResource is transmitted the upstream data of described buffer memory to described access point.
Wherein, described bandwidth resources refer to that access point distributes to the letter of website transmission buffer upstream dataThe resource such as duration, transmission time started of road bandwidth, shared channel width.
In this technical scheme, indicating website when the first flag has the upstream data of buffer memory, and second marksWhile knowing position instruction website support uplink orthogonal frequency division multiple access mechanism, access point can generate the communication resource and divideJoin message frame, and then website can come according to the bandwidth resources that comprise in communication resource distribution message frameThe upstream data of transmission buffer, has guaranteed the application of ULOFDMA mechanism, has improved the profit of frequency spectrumBy efficiency, indirectly improve the handling capacity of system.
In above-mentioned arbitrary technical scheme, preferably, (be MAC at the frame head of described message frameDescribed the first flag and described the second flag are set Header).
In above-mentioned arbitrary technical scheme, preferably, described the first flag is arranged on described frame headIn Moredata subdomain in frame control domain (being FrameControl); Described the second flag is establishedPut in the Reserved subdomain in the high-throughput control domain (being HTControl) at described frame head.
Certainly, the second flag also can be arranged in other fields of mac frame head or newly-increased oneIndividual exclusive field arranges the second flag.
In above-mentioned arbitrary technical scheme, preferably, the described described message sending to described access pointFrame is following one of any: clean culture acknowledgement frame, up aggregate acknowledgement frames, clean culture uplink data frames, spySurvey claim frame, association request frame and authentication request frames.
Fig. 2 shows the showing of communicator of the WLAN of first embodiment according to the inventionMeaning block diagram.
As shown in Figure 2, the communicator of the WLAN of first embodiment according to the invention200, comprising: generation unit 202 and transmitting element 204.
Wherein, generation unit 202, for generating messages frame, described message frame comprises the first flagWith the second flag, whether described the first flag is used to indicate website the upstream data of buffer memory, instituteStating the second flag is used to indicate described website and whether supports uplink orthogonal frequency division multiple access mechanism; Send singleUnit 204, for sending described message frame to access point.
Wherein, generation unit 202 can be signal processor, central processing unit or base band in the time realizingProcessor. Transmitting element 204 can be transmitter (Transmitter) or antenna.
In this technical scheme, the message that website comprises the first flag and the second flag by generationFrame, and whether the first flag instruction website has the upstream data of buffer memory, the second flag instruction websiteWhether support uplink orthogonal frequency division multiple access mechanism, make access point at the message frame that receives website transmissionTime, the information that can report according to website is determined the ability information of website, and then can have at website slowThe upstream data of depositing, and while supporting uplink orthogonal frequency division multiple access mechanism, send the communication resource to website and divideJoin message frame, to guarantee that ULOFDMA mechanism can be applied, thus the utilization that improves frequency spectrumEfficiency, has improved the handling capacity of system indirectly.
In the time that the value of the first flag is set to 1, represent that described website has the upstream data of buffer memory,Certainly when also the first flag is set to other values (such as 0), represent the upstream data of buffer memory.
In the time that the value of the second flag is set to 1, represent that described website support uplink orthogonal frequency division is manyLocation mechanism, represents described website when also the second flag is set to other values (such as 0) certainlySupport uplink orthogonal frequency division multiple access mechanism.
Wherein, uplink orthogonal frequency division multiple access mechanism refers to the letter that all websites distribute according to access pointRoad bandwidth resources can be transmitted the upstream data of institute's buffer memory in communication channel simultaneously to access point.
In technique scheme, preferably, indicate described website to have buffer memory in described the first flagUpstream data, described the second flag indicates described website to support uplink orthogonal frequency division multiple access mechanismTime, the communicator 200 of described WLAN also comprises:
Receiving element 206, the communication resource distribution message frame sending for receiving described access point, instituteState communication resource distribution message frame and comprise that described website transmits the required bandwidth of upstream data of described buffer memoryResource; Data transmission unit 208, described in transmitting to described access point according to described bandwidth resourcesThe upstream data of buffer memory.
Wherein, receiving element 206 can be receiver or antenna in the time realizing. Described bandwidth resourcesRefer to that access point distributes to the channel width of website transmission buffer upstream data, shared channel widthThe resources such as duration, transmission time started.
In this technical scheme, indicating website when the first flag has the upstream data of buffer memory, and second marksWhile knowing position instruction website support uplink orthogonal frequency division multiple access mechanism, access point can generate the communication resource and divideJoin message frame, and then website can come according to the bandwidth resources that comprise in communication resource distribution message frameThe upstream data of transmission buffer, has guaranteed the application of ULOFDMA mechanism, has improved the profit of frequency spectrumBy efficiency, indirectly improve the handling capacity of system.
In above-mentioned arbitrary technical scheme, preferably, in the frame head of described message frame, arrange describedOne flag and described the second flag.
In above-mentioned arbitrary technical scheme, preferably, described the first flag is arranged on described frame headIn Moredata subdomain in frame control domain; The height that described the second flag is arranged on described frame head gulps downIn Reserved subdomain in the amount of telling control domain.
Certainly, the second flag also can be arranged in other fields of mac frame head or newly-increased oneIndividual exclusive field arranges the second flag.
In above-mentioned arbitrary technical scheme, preferably, the described described message sending to described access pointFrame is following one of any: clean culture acknowledgement frame, up aggregate acknowledgement frames, clean culture uplink data frames, spySurvey claim frame, association request frame and authentication request frames.
Fig. 3 shows the schematic block diagram of website according to an embodiment of the invention.
As shown in Figure 3, website 300 according to an embodiment of the invention, comprising: as shown in Figure 2The communicator 200 of WLAN.
Fig. 4 shows showing according to the communication means of the WLAN of second embodiment of the present inventionMeaning flow chart.
As shown in Figure 4, according to the communication means of the WLAN of second embodiment of the present invention,Comprise:
Step 402, receipt message frame, described message frame comprises the first flag and the second flag,Described the first flag instruction website has the upstream data of buffer memory, and described the second flag is indicated described stationPoint is supported uplink orthogonal frequency division multiple access mechanism;
Step 404, generates communication resource distribution message frame, and described communication resource distribution message frame comprisesDescribed website transmits the required bandwidth resources of upstream data of described buffer memory;
Step 406, sends described communication resource distribution message frame to described website.
Wherein, the executive agent of the communication means shown in Fig. 4 can be router etc.
In this technical scheme, by there is the upstream data of buffer memory at the first flag instruction website, theWhen two flag instruction websites are supported uplink orthogonal frequency division multiple access mechanism, generate communication resource distribution messageFrame is also sent to website, makes website in the time receiving communication resource distribution message frame, can be according to logicalThe bandwidth resources that comprise in letter resource allocation message frame are carried out the upstream data of transmission buffer, have guaranteedThe application of ULOFDMA mechanism, has improved the utilization ratio of frequency spectrum, has indirectly improved gulping down of systemThe amount of telling.
Particularly, in the time that the value of the first flag is set to 1, represent that described website has the upper of buffer memoryRow data; In the time that the value of the second flag is set to 1, represent described website support uplink orthogonal frequentlyDivide multiple access mechanism.
Wherein, uplink orthogonal frequency division multiple access mechanism refers to the letter that all websites distribute according to access pointRoad bandwidth resources can be transmitted the upstream data of institute's buffer memory in communication channel simultaneously to access point.
In technique scheme, preferably, also comprise: receive described website and provide according to described bandwidthThe upstream data of source transmission.
Wherein, bandwidth resources refer to that access point distributes to the channel strip of website transmission buffer upstream dataThe resource such as duration, transmission time started of wide, shared channel width.
Fig. 5 shows showing according to the communicator of the WLAN of second embodiment of the present inventionMeaning block diagram.
As shown in Figure 5, according to the communicator of the WLAN of second embodiment of the present invention,Comprise: receiving element 502, generation unit 504 and transmitting element 506.
Wherein, receiving element 502, for receipt message frame, described message frame comprises the first flagWith the second flag, described the first flag instruction website has the upstream data of buffer memory, described the second markKnow the position described website of instruction and support uplink orthogonal frequency division multiple access mechanism; Generation unit 504, for generatingCommunication resource distribution message frame, described communication resource distribution message frame comprises that described website transmission is described slowThe required bandwidth resources of upstream data of depositing; Transmitting element 506, described in sending to described websiteCommunication resource distribution message frame.
Wherein, receiving element 502 can be receiver or antenna in the time realizing; Generation unit 504 existsWhile realization, can be signal processor, central processing unit or BBP; Transmitting element 506 canTransmitter or antenna.
In this technical scheme, by there is the upstream data of buffer memory at the first flag instruction website, theWhen two flag instruction websites are supported uplink orthogonal frequency division multiple access mechanism, generate communication resource distribution messageFrame is also sent to website, makes website in the time receiving communication resource distribution message frame, can be according to logicalThe bandwidth resources that comprise in letter resource allocation message frame are carried out the upstream data of transmission buffer, have guaranteedThe application of ULOFDMA mechanism, has improved the utilization ratio of frequency spectrum, has indirectly improved gulping down of systemThe amount of telling.
Particularly, in the time that the value of the first flag is set to 1, represent that described website has the upper of buffer memoryRow data; In the time that the value of the second flag is set to 1, represent described website support uplink orthogonal frequentlyDivide multiple access mechanism.
Wherein, uplink orthogonal frequency division multiple access mechanism refers to the letter that all websites distribute according to access pointRoad bandwidth resources can be transmitted the upstream data of institute's buffer memory in communication channel simultaneously to access point.
In technique scheme, preferably, described receiving element 502 also for: receive described stationPoint is according to the upstream data of described bandwidth resources transmission.
Wherein, bandwidth resources refer to that access point distributes to the channel strip of website transmission buffer upstream dataThe resource such as duration, transmission time started of wide, shared channel width.
Fig. 6 shows the schematic block diagram of access point according to an embodiment of the invention.
As shown in Figure 6, access point 600 according to an embodiment of the invention, comprising: as shown in Figure 5The communicator 500 of WLAN.
In sum, technical scheme of the present invention is mainly the ACK frame that replies to AP at STAs(comprising clean culture ACK frame and multicast ACK frame), probe request (ProbeRequest), passConnection claim frame (AssociationRequest), authentication request frames (AuthenticationRequest)Or the frame head part (MACHeader) of other Frames identifies it and has the upstream data of buffer memory, andIdentify it and support ULOFDMA mechanism, transmit so that AP can start follow-up STAs simultaneouslyThe process of row data.
Particularly, when STAs is feeding back to identify it in the ACK frame of AP and have the upper line number of buffer memoryAccording to and represent that with one or more bits STAs can receive the resource allocation message that AP sendsWhen frame, can there be two kinds of feedback systems as shown in Figure 7 and Figure 8:
As shown in Figure 7, can feed back to AP by clean culture ACK frame. Particularly, when AP toEach STA sends MSDU (MACServiceDataUnit, MAC service data unit)After, (STA1 is anti-to AP as shown in Figure 7 at the ACK frame to AP feedback for each STAFeedback ACK1, STA2 is to AP feeding back ACK 2 ..., STAn to AP feeding back ACK n) inIdentify its upstream data that has buffer memory and can receive with it resource allocation message frame that AP sends, and thenAP sends ResourceAllocation (resource distribution) message frame, then institute to all STASome STA can be simultaneously to AP transmit ascending data, i.e. UL (Uplink shown in Fig. 7Link)MSDU。
As shown in Figure 8, also can be by ULACK (being the aggregate acknowledgements (ACK) of STAs)Frame feeds back to AP. Particularly, when AP sends MSDU (MACService to each STADataUnit, MAC service data unit) after, the ULACK acceptance of the bid at STAs to AP feedbackKnow its upstream data that has buffer memory and can receive with it resource allocation message frame that AP sends, and thenAP sends ResourceAllocation (resource distribution) message frame, then institute to all STASome STA can be simultaneously to AP transmit ascending data, i.e. ULMSDU shown in Fig. 8.
Wherein, as a preferred embodiment and non-limiting, as shown in Figure 9, can pass through STAOr STAs feeds back in FrameControl (frame control) territory of the frame head of the message frame of APWhether MoreData subdomain identifies STA or STAs the upstream data of buffer memory; Meanwhile, canFeed back to HTControl (the high-throughput control of the frame head of the message frame of AP by STA or STAsSystem) Reserved subdomain in territory identifies STA or whether STAs supports ULOFDMA machineSystem, identifies STA or STAs and whether can receive the resource allocation message frame that AP sends.
Figure 10 shows according to the communication means of the WLAN of the 3rd embodiment of the present inventionSchematic flow diagram.
As shown in figure 10, according to the communication party of the WLAN of the 3rd embodiment of the present inventionMethod, comprising:
Step 1001, website 1 generating messages frame, comprises the first flag and the second mark in message frameKnow position, whether the first flag is used to indicate website 1 upstream data of buffer memory, and the second flag is usedWhether support ULOFDMA mechanism in instruction website 1.
Need to be main, if the message frame that website 1 generates is the ACK that feeds back to access point 2Frame, also comprised before step 1001 that access point 2 sends the step of data to website 1.
Step 1002, website 1 sends message frame.
Step 1003, access point 2 receipt message frames.
Step 1004, access point 2 determines that according to the flag in message frame website 1 has the upper of buffer memoryRow data and support ULOFDMA mechanism.
Step 1005, access point 2 generates resource allocation message frame.
Step 1006, access point 2 sends resource allocation message frame.
Step 1007, website 1 receives resource allocation message frame.
Step 1008, website 1 obtains the bandwidth money that access point 2 distributes from resource allocation message frameSource.
Step 1009, website 1 is according to the upstream data of bandwidth resources transmission buffer.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of newThe communication plan of WLAN, can guarantee that ULOFDMA mechanism is applied, thereby improvesThe utilization ratio of frequency spectrum, indirectly improved the handling capacity of system.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, forThose skilled in the art, the present invention can have various modifications and variations. All in essence of the present inventionWithin god and principle, any amendment of doing, be equal to replacement, improvement etc., all should be included in the present inventionProtection domain within.
Claims (16)
1. a communication means for WLAN, is characterized in that, comprising:
Generating messages frame, described message frame comprises the first flag and the second flag, described the first markWhether knowledge position is used to indicate website the upstream data of buffer memory, described in described the second flag is used to indicateWhether website supports uplink orthogonal frequency division multiple access mechanism;
Send described message frame to access point.
2. the communication means of WLAN according to claim 1, is characterized in that,Described the first flag indicates described website to have the upstream data of buffer memory, and described the second flag is indicated instituteWhile stating website support uplink orthogonal frequency division multiple access mechanism,
The communication means of described WLAN, also comprises:
Receive the communication resource distribution message frame that described access point sends, described communication resource distribution messageFrame comprises that described website transmits the required bandwidth resources of upstream data of described buffer memory;
Transmit the upstream data of described buffer memory to described access point according to described bandwidth resources.
3. the communication means of WLAN according to claim 1, is characterized in that,Described the first flag and described the second flag are set in the frame head of described message frame.
4. the communication means of WLAN according to claim 3, is characterized in that:
Described the first flag is arranged in the Moredata subdomain in the frame control domain of described frame head;
Described the second flag is arranged on Reserved in the high-throughput control domain of described frame headIn territory.
5. according to the communication means of the WLAN described in any one in claim 1 to 4, itsBe characterised in that, the described described message frame sending to described access point be one of any as follows:
Clean culture acknowledgement frame, up aggregate acknowledgement frames, clean culture uplink data frames, probe request, associationClaim frame and authentication request frames.
6. a communication means for WLAN, is characterized in that, comprising:
Receipt message frame, described message frame comprises the first flag and the second flag, described the first markKnowing position instruction website has the upstream data of buffer memory, and it is up that described the second flag indicates described website to supportOFDM mechanism;
Generate communication resource distribution message frame, described communication resource distribution message frame comprises that described website passesThe required bandwidth resources of upstream data of defeated described buffer memory;
Send described communication resource distribution message frame to described website.
7. the communication means of WLAN according to claim 6, is characterized in that, alsoComprise:
Receive described website according to the upstream data of described bandwidth resources transmission.
8. a communicator for WLAN, is characterized in that, comprising:
Generation unit, for generating messages frame, described message frame comprises the first flag and the second markPosition, whether described the first flag is used to indicate website the upstream data of buffer memory, described the second markPosition is used to indicate described website and whether supports uplink orthogonal frequency division multiple access mechanism;
Transmitting element, for sending described message frame to access point.
9. the communicator of WLAN according to claim 8, is characterized in that,Described the first flag indicates described website to have the upstream data of buffer memory, and described the second flag is indicated instituteWhile stating website support uplink orthogonal frequency division multiple access mechanism,
The communicator of described WLAN also comprises:
Receiving element, the communication resource distribution message frame sending for receiving described access point is described logicalLetter resource allocation message frame comprises that described website transmits the required bandwidth money of upstream data of described buffer memorySource;
Data transmission unit, for transmitting described buffer memory according to described bandwidth resources to described access pointUpstream data.
10. the communicator of WLAN according to claim 8, is characterized in that,Described the first flag and described the second flag are set in the frame head of described message frame.
The communicator of 11. WLANs according to claim 10, is characterized in that:
Described the first flag is arranged in the Moredata subdomain in the frame control domain of described frame head;
Described the second flag is arranged on Reserved in the high-throughput control domain of described frame headIn territory.
The communicator of the WLAN in 12. according to Claim 8 to 11 described in any one,It is characterized in that, the described described message frame sending to described access point be one of any as follows:
Clean culture acknowledgement frame, up aggregate acknowledgement frames, clean culture uplink data frames, probe request, associationClaim frame and authentication request frames.
The communicator of 13. 1 kinds of WLANs, is characterized in that, comprising:
Receiving element, for receipt message frame, described message frame comprises the first flag and the second markPosition, described the first flag instruction website has the upstream data of buffer memory, described the second flag instruction instituteState website and support uplink orthogonal frequency division multiple access mechanism;
Generation unit, for generating communication resource distribution message frame, described communication resource distribution message frameComprise that described website transmits the required bandwidth resources of upstream data of described buffer memory;
Transmitting element, for sending described communication resource distribution message frame to described website.
The communicator of 14. WLANs according to claim 13, is characterized in that,Described receiving element also for:
Receive described website according to the upstream data of described bandwidth resources transmission.
15. 1 kinds of websites, is characterized in that, comprising: as any one institute in claim 8 to 12The communicator of the WLAN of stating.
16. 1 kinds of access points, is characterized in that, comprising: the nothing as described in claim 13 or 14The communicator of line LAN.
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| CN109219154A (en) * | 2017-07-03 | 2019-01-15 | 珠海市魅族科技有限公司 | Communication means and communication device, the communication equipment of WLAN |
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